Method and apparatus for validating integrity of a mobile communication device
a mobile communication and integrity validation technology, applied in the field of mobile communication devices, can solve the problems of high development, deployment and maintenance costs, and and achieve the effect of reducing the risk of downloading malware that might be embedded in applications freely available on the intern
Active Publication Date: 2012-09-13
VIASAT INC
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AI Technical Summary
Benefits of technology
The patent describes a method for validating the integrity of a mobile communication device by installing an integrity verification application on the device. This application includes a list of expected signatures for data on the device and establishes a first pass indicator and a second pass indicator. The method involves running an integrity check calculation on non-volatile memory of the device using the first pass indicator as a seed value to provide a first integrity check value, receiving the second pass indicator, splitting a parameter of the second pass indicator against the first integrity check value to provide a split of the second pass indicator, and storing the split of the second pass indicator in the non-volatile memory of the device. The second pass indicator is determined based on the split of the second pass indicator and the second integrity check value. The method also includes providing multiple operating modes or domains with different levels of security and reliability. The device can also be provisioned by deleting existing software and installing trusted software on the device. The integrity verification application can also include a list of expected signatures for data on the device and an initialization module configured to establish the first pass indicator and the second pass indicator. The method can also include detecting unauthorized modification and providing a means for users to switch between domains.
Problems solved by technology
Traditionally this is accomplished with special purpose hardware and systems that can be very expensive to develop, deploy and maintain.
These may include the avoiding expenses incurred from personal calls, the potential embarrassment of having certain types of inappropriate personal use associated with the business entity, and the risk of downloading mal-ware that might be embedded in applications freely available on the internet.
Method used
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[0041]As described herein, a goal of a multiple domain smartphone is to provide different levels of security and stability in different domains depending on the usage context and to provide an efficient and convenient way to switch between the domains without sacrificing security and stability. A further goal is to provide this capability using a commercial off-the-shelf (COTS) smartphone with only software modifications. The software modifications are intended to provide “secure” software, by which is meant that the quality and integrity of the of the software and its execution environment may provide a basis for trusting its behavior.
[0042]A multiple domain smartphone according to embodiments described herein provides many benefits. It should be understood that a viable system need not include all of the features described herein and is susceptible to various modifications and alternative forms.
[0043]One embodiment of the invention is described with reference to FIG. 1, which show...
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A method for validating integrity of a mobile communication device includes installing an integrity verification application on the mobile communication device. The method also includes establishing a first pass indicator and a second pass indicator including receiving a first instance of the first pass indicator. The method also includes receiving a second instance of the first pass indicator as a challenge for verification. In response to receiving the second instance of the first pass indicator, the second pass indicator may be displayed as an indication of the integrity.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of U.S. application Ser. No. 12 / 896,782, filed Oct. 1, 2010, the contents of which are incorporated herein by reference in their entirety for all purposes.FIELD OF THE INVENTION[0002]The present invention relates generally to mobile communication devices. More particularly, the present invention relates to methods and apparatus for providing mobile communication devices that operate in multiple isolated domains that provide differing levels of security and reliability.BACKGROUND OF THE INVENTION[0003]Communication systems play an important role in government, business and personal settings, each with their own unique set of requirements that sometimes overlap and sometimes conflict. In government settings, there is often a need to handle sensitive communications in a secure manner and the communication devices need to be reliable and resistant to unauthorized modification. Traditionally this is accomplis...
Claims
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IPC IPC(8): H04W12/10
CPCH04L63/083H04L63/123G06F2221/2113G06F21/57H04M1/67
InventorLINDTEIGEN, TYVAN VOORHEES, FRANKLIN DAVID
OwnerVIASAT INC